Nadim Mansour ✉
Nadim is a lawyer at Rousseau Mazzuca LLP, where his practice focuses on labour law, civil litigation, and regulatory offences. Nadim also has experience in employment law and professional regulation.
Nadim’s labour law practice involves representing clients in certification applications, termination applications, unfair labour practice complaints, and grievance proceedings. Nadim’s litigation practice includes breach of contract disputes and construction lien claims. In the area of regulatory offences, Nadim defends clients charged under statutes such as the Building Code Act, the Occupational Health and Safety Act, and the Fire Protection and Prevention Act.
Nadim has conducted numerous trials and administrative hearings. He has experience with the Ontario Superior Court of Justice, the Ontario Labour Relations Board, the Human Rights Tribunal of Ontario, and the Ontario Court of Justice.
Before joining Rousseau Mazzuca, Nadim worked at a prominent labour and employment law firm in Toronto. He also represented health professionals in professional regulation matters at another respected firm. Prior to entering private practice, Nadim served as an Assistant Crown Attorney with the Ministry of the Attorney General.
Nadim earned his combined Juris Doctor and Honours Business Administration degrees from the Faculty of Law and Ivey Business School at the University of Western Ontario. Prior to becoming a lawyer, Nadim worked at the World Bank Group in Washington D.C, and served as a medic in the Singapore Armed Forces.
Outside of the office, Nadim enjoys spending time with his family and rambunctious Labrador Retriever, staying active in the outdoors, exploring new restaurants, and trying out new recipes in the kitchen. Nadim also sits as a member on the Research Ethics Board of Brock University.
Representative Work:
Counsel to a trade union in a certification application for a bargaining unit comprising over 200 employees
Represented a major design-build firm in a certification application and unfair labour practice complaint brought by a construction union
Acted for a trade union in a termination application brought shortly after a change in ownership of the employer corporation
Successfully sought reconsideration of an Ontario Labour Relations Board decision on the basis of obvious legal error and procedural fairness – Carpenters and Allied Workers Local 27, United Brotherhood of Carpenters and Joiners of America v Weston Flooring Limited, 2025 CanLII 31648 (ON LRB)
Counsel to a trade union and its executives in a human rights application
Represented a general contractor and several property owners in charges brought under the Building Code Act
Worked on union grievances at the Ontario Labour Relations Board, aiding in enforcing judgment
